Face mask and filter unit assembly



FIG. 1 is a right side, front perspective view of a face mask system with filter unit, showing my new design;

FIG. 2 is a left side, front perspective view thereof;

FIG. 3 is a front elevation view in a condition of use;

FIG. 4 is a front elevation view of the face mask and filter unit assembly of FIG. 1 ;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a left side view thereof;

FIG. 8 is a top plan view thereof; and,

FIG. 9 is a bottom plan view thereof.

In the drawings, the broken lines depict portions of the face mask and filter unit assembly that form no part of the claimed design. The broken lines showing a human figure in FIG. 3 depict environmental matter and form no part of the claimed design.

The filter unit tubing is shown with symbolic breaks in its length. The appearance of any portions of the filter unit tubing between these breakaway lines forms no part of the claimed design. The breakaway lines also form no part of the claim. 

CLAIM The ornamental design for a face mask and filter unit assembly, as shown and described. 